JPH07278589A - Detergent composition for plastic - Google Patents

Abstract

PURPOSE:To obtain a detergent composition containing a compound comprising a terpene hydrocarbon, etc., a surfactant, and water, useful for cleansing mold release agents for urethane bumpers, tin-containing polyvinyl chloride lubricants, etc., excellent in plastic detergency, and not causing environmental problems and safety problems. CONSTITUTION:This composition contains (A) 3-90wt.% of a 10C compound comprising at least one of (i) a terpene hydrocarbon, (ii) a terpene alcohol, and (iii) a terpene ether, (B) 5-50wt.% of a surfactant, and (C) water. The component (i) in the component A is preferably either of alpha-pinene, beta-pinene, limonene, p-menthene-1, p-menthene-3, p-thymene and p-menthane, and the component (ii) is preferably either of terpineol and p-menthanol. The component (iii) is preferably either of 1,4-cineol and 1,8-cineol. The component B is preferably an anionic or a nonionic surfactant.

Description

Detailed Description of the Invention

[0001]

This invention relates to poly (vinyl chloride) (PV
The present invention relates to a plastic cleaner composition for cleaning plastic moldings such as pipes and urethane bumpers, etc., such as mold release agents, lubricants, and dirt such as dust that adhere to them.

[0002]

2. Description of the Related Art Conventionally, regarding the cleaning of oil components such as waxes and grease adhered to plastic molded articles,
1,1-trichloroethane and chlorofluorocarbon-
A halogen-based solvent such as 113 or trichlorethylene has been used, or a water-based detergent mainly containing a surfactant has been used.

However, halogen-based solvents such as 1,1,1-trichloroethane and chlorofluorocarbon-113 are unsuitable for the environmental problem of ozone layer depletion, which has recently been regarded as a problem. 1,1,1-trichloroethane is frequently used for cleaning the release agent of the urethane bumper, which is a problem. Further, a halogen-based solvent such as trichlorethylene is also considered to have a bad influence on the human body in terms of safety.

Further, when a water-based cleaning agent mainly containing a surfactant is used, there is a drawback that the cleaning power is weak.

Recently, with the deleading of polyvinyl chloride pipes, polyvinyl chloride containing a tin-based stabilizer has come to be used. Therefore, the amount of the lubricant compounded increases, and when cleaning, There is a problem that conventional water-based detergents mainly composed of a surfactant cannot be removed sufficiently.

As a lubricant used for polyvinyl chloride pipes, waxes such as polyethylene wax, polypropylene wax, paraffin wax and ester wax, and metallic soap of stearic acid are generally used.

Further, regarding the cleaning of the release agent of the urethane bumper, sufficient water-based cleaning agents mainly containing a surfactant have not been available in place of 1,1,1-trichloroethane.

As a release agent for urethane bumpers, waxes such as paraffin wax are generally used.

[0009]

DISCLOSURE OF THE INVENTION The present invention relates to cleaning of mold release agents for urethane bumpers, cleaning of plastics such as tin-containing polyvinyl chloride lubricants, and the like, which has excellent cleaning power, environmental problems and safety. Another object of the present invention is to provide a cleaning composition for plastics which has no problem.

[0010]

In order to solve the above problems, the present invention provides the following detergent composition for plastics. That is, for at least one type of terpene-based hydrocarbon, terpene alcohol, and terpene ether, for a plastic containing 3 to 90% by weight of a compound having 10 carbon atoms, 5 to 50% by weight of a surfactant, and water. It is a cleaning composition.

The terpene hydrocarbon, terpene alcohol, and terpene ether terpene compounds are essential oils obtained by steam distillation of raw pine resin collected from standing trees of red pine and black pine, which are mainly produced in North America and mainland China.
It is an essential oil by-produced in the pulp industry, an essential oil extracted from orange peel, or a compound derived from these essential oils by an isomerization reaction or the like.

Examples of the terpene type hydrocarbon having 10 carbon atoms include myrcene, carene, ocimene, pinene, limonene, camphene, terpinolene, tricyclene, terpinene, fenchen, ferlandrene, sylvestrene, sabinene, P-menthene-1, P-Menten-3,
P-cymen, P-menthan, etc. are mentioned.

Among them, in particular, α-pinene, β-pinene, limonene, P-menthene-1, P-menthene-3,
P-cymene and P-menthane are preferred.

Examples of the terpene alcohol having 10 carbon atoms include citronellol, pinocampheol, geraniol, fentyl alcohol, nerol, borneol, linalool, menthol, terpineol, cambeol, twill alcohol and P-menthanol.

Among them, especially terpineol, P-
At least one selected from mentanol is preferable.

Examples of the terpene ether having 10 carbon atoms include 1,4-cineole, 1,8-cineole and pinol.

Among them, especially 1,4-cineole,
At least one selected from 1,8-cineole is preferred.

The blending amount of these terpene compounds is 3 to 9
Although it is 0% by weight, 5 to 70% by weight is particularly desirable.
If the content of the terpene compound is less than 3% by weight, a sufficient cleaning effect cannot be obtained. When it exceeds 90% by weight, the balance between the terpene compound, the surfactant and water is lost, and the detergency is lowered.

These terpene compounds swell or dissolve stain components such as mold release agents and lubricants on the plastic surface,
It is considered that the detergency is exhibited by peeling from the plastic surface.

The surfactant is not particularly limited, and various known nonionic surfactants, anionic surfactants,
A cationic surfactant and an amphoteric surfactant can be appropriately selected and used, and these can be used alone or in combination of two or more kinds.

Specific examples of the nonionic surfactant include:
Polyoxyethylene higher alcohol ether, polyoxyethylene alkyl allyl ether and other polyethylene glycol ether type nonionic surfactants; Polyoxyethylene fatty acid ester and other polyethylene glycol ester type nonionic surfactants; Ethylene oxide addition of higher aliphatic amines Products; ethylene oxide adducts of fatty acid amides; polyhydric alcohol type nonionic surfactants such as sorbitan fatty acid esters and sucrose fatty acid ester esters; fatty acid alkanolamides; and polyoxypropylene nonionic interfaces corresponding to these An activator and a polyoxyethylene polyoxypropylene block copolymer type nonionic surfactant can be mentioned.

Specific examples of the anionic surfactant include:
Various known sulfuric acid ester type anionic surfactants such as higher alcohol sulfuric acid ester salts, alkyl sulfuric acid ester salts, polyoxyethylene higher alcohol sulfuric acid ester salts; various known sulfonic acid salts such as alkyl sulfonates and alkyl allyl sulfonates -Based anionic surfactants; phosphoric acid ester-based anionic surfactants such as higher alcohol phosphoric acid ester salts, polyoxyethylene higher alcohol phosphoric acid ester salts, and polyoxyethylene alkylallyl phosphoric acid ester salts, dialkylsulfosuccinic acid ester salts Anionic surfactants such as

Examples of the cationic surfactants include quaternary ammonium salts such as alkyltrimethylammonium chloride, dialkyldimethylammonium chloride and alkyldimethylbenzylammonium chloride.

Examples of the amphoteric surfactant include amino acid type and betaine type amphoteric surfactants.

As the surfactant, at least one selected from anionic surfactants and nonionic surfactants is particularly preferable.

Plastics are classified into thermoplastic resins and thermosetting resins, but any plastics may be used.

Above all, the effect of urethane for bumpers and polyvinyl chloride containing tin is great.

In addition to the compound having at least one kind of terpene hydrocarbon, terpene alcohol and terpene ether having 10 carbon atoms, the surfactant and water, other components may be added. Examples thereof include mineral acids such as hydrochloric acid, phosphoric acid and sulfuric acid, and inorganic salts such as sodium phosphate. These compounds have an effect of peeling off the stain component at the time of washing.

[0029]

EFFECTS OF THE INVENTION Since the present invention is a composition as described above, it is excellent in detergency against stains such as mold release agents, lubricants, dusts, waxes, grease, etc., which adhere to plastic molded products, and environmental problems and It is a detergent composition for plastics which has no problem in safety.

The detergent composition for plastics is also very effective for urethane bumpers and tin-containing polyvinyl chloride, which has been frequently used recently, as a lead-based alternative.

[0031]

EXAMPLES Examples of the present invention will be described below.

Example 1 A test piece (urethane bumper of 5 cm × 5 cm) is shown in Table 1.
It was dipped in the plastic detergent composition of the detergent 1 shown in the above, and washed for 5 minutes by rocking using a clean pot UP-7 (washing machine) manufactured by Shimada Rika Kogyo Co., Ltd. After that, rinse with running water for 30 seconds, and then drier (90
The residual cleaning agent was removed at (° C x 30 minutes). After washing, a test piece (5 cm × 5 cm urethane bumper) was shower extracted with 20 ml of carbon tetrachloride to extract the release agent remaining on the surface. Further, the extracted carbon tetrachloride was put in an oil content measuring cell, and the amount of organic substances was measured by infrared absorption analysis. The amount of organic matter was determined by the area absorbance value of the peak at 3040 to 2800 cm ⁻¹ . The cleaning evaluation results are shown in Table 2. On the other hand, a test piece different from the above cleaning evaluation test (5 cm
80 ° C x 30 after applying spray type one-component urethane paint (white)
Minute, left for 2 days, and further evaluated for adhesion after immersion in warm water for 10 days. (Gran Eye Test) The results of evaluation of coating adhesion are shown in Table 2.

Example 2 Using Cleaning Agent 2 shown in Table 1, cleaning evaluation and coating adhesion evaluation were carried out in the same manner as in Example 1. The results are shown in Table 2.

Example 3 Cleaning was performed in the same manner as in Example 1 except that the cleaning agent 3 shown in Table 1 was used and ultrasonic waves (output = 0.16 W / cm ² , 42 kHz) were used instead of shaking. Evaluation and coating adhesion evaluation were performed. The results are shown in Table 2.

Comparative Example 1 Using the cleaning agent A shown in Table 1, cleaning evaluation and coating adhesion evaluation were carried out in the same manner as in Example 1. The results are shown in Table 2.

Comparative Example 2 Cleaning was performed in the same manner as in Example 1 except that the cleaning agent B shown in Table 1 was used and ultrasonic waves (output = 0.16 W / cm ² , 42 kHz) were used instead of shaking. Evaluation and coating adhesion evaluation were performed. The results are shown in Table 2.

Comparative Example 3 Cleaning evaluation and coating adhesion evaluation were carried out in the same manner as in Example 1 without cleaning. The results are shown in Table 2.

[0038]

[Table 1]

[0039]

[Table 2]

Example 4 A polyvinyl chloride pipe having a diameter of 36 mm and a length of 120 mm was washed with the cleaning agent 4 shown in Table 3 by the following procedure. (1) The cleaning agent 4 was poured on the surface of the polyvinyl chloride pipe. (2) Rinse the cleaning agent 4 with running water. (3) Lightly wipe with a waste cloth. (4) Dry with a dryer (hot air) for 30 seconds. . After washing, based on the method of JIS-K6768-1971, the wettability of the pipe surface was measured using a standard solution of wetting index to measure the surface tension of the polyvinyl chloride pipe surface. The higher the wettability, the better the cleanability. The measurement results are shown in Table 4.

Example 5 Using Cleaning Agent 5 shown in Table 3, the surface tension was measured by the same method as in Example 4. The results are shown in Table 4.

Example 6 Using Cleaning Agent 6 shown in Table 3, the surface tension was measured by the same method as in Example 4. The results are shown in Table 4.

Example 7 Using Cleaning Agent 7 shown in Table 3, the surface tension was measured by the same method as in Example 4. The results are shown in Table 4.

Comparative Example 4 The detergent A shown in Table 3 was used to measure the surface tension in the same manner as in Example 4. The results are shown in Table 4.

Comparative Example 5 Using the cleaning agent C shown in Table 3, the surface tension was measured by the same method as in Example 4. The results are shown in Table 4.

Comparative Example 6 Cleaning evaluation and coating adhesion evaluation were carried out in the same manner as in Example 4 without cleaning. The results are shown in Table 2.

[0047]

[Table 3]

[0048]

[Table 4]

[0049]

[Effect] The detergent composition for plastics obtained by the present invention has significantly improved detergency for plastics as compared with conventional detergents, and thus ozone layer depletion, water pollution,
Excellent in safety. In particular, the detergency with respect to the urethane bumper release agent and the detergency with respect to the wettability of the polyvinyl chloride hard pipe are remarkably improved as compared with the conventional detergents.

Front page continuation (72) Inventor Tsugio Ogawa 9-1-18 Tanimachi, Chuo-ku, Osaka City, Osaka Prefecture Sumitomo Life Tanimachi Building, Kyoeisha Chemical Co., Ltd. (72) Inventor Kiyoji Fujii 1080, Takagicho, Fuchu, Hiroshima Prefecture Micaru Co., Ltd. (72) Inventor Yoshinobu Tabuchi 1080 Takagicho, Fuchu-shi, Hiroshima Yasuharake Mikaru Co., Ltd. (72) Makoto Katayama 1080 Takagicho, Fuchu-shi, Hiroshima Yasuharake Mikaru

Claims (5)

[Claims] 1. At least one kind of terpene hydrocarbon, terpene alcohol, and terpene ether, having 1 carbon atom.
3 to 90% by weight of the compound consisting of 0 and 5 of the surfactant.
A detergent composition for plastics, which comprises -50% by weight and water. 2. The compound having 10 carbon atoms is at least one kind selected from α-pinene, β-pinene, limonene, P-menthene-1, P-menthene-3, P-cymene, and P-menthane. A terpene-based hydrocarbon.
The detergent composition for plastics described. 3. The detergent composition for plastics according to claim 1, wherein the compound having 10 carbon atoms is at least one terpene alcohol selected from terpineol and P-mentanol. 4. A compound having 10 carbon atoms is 1,4-
The plastic detergent composition according to claim 1, which is at least one terpene ether selected from cineol and 1,8-cineole. 5. The surfactant is at least one kind of anionic surfactant and nonionic surfactant.
The detergent composition for plastics described.